Network Function Programmability and Software-Defined Synthetic Optical Networks for Data Centres and Future Internet

Zervas, Georgios; Rofoee, Bijan Rahimzadeh; Yan, Yan; Simeonidou, Dimitra

doi:10.1364/ps.2014.pm4c.3

Cited by 4 publications

(2 citation statements)

References 3 publications

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“…Network function programmability unlocks infrastructure and architecture flexibility in the DCN, by introducing the AoD concept to the design of the inter-cluster node and ToR [7] [28]. Multiple network functions, such as aggregation, broadcasting, demultiplexing, are connected to a LPFS as a plug-in function.…”

Section: ) Network Function Programmability Enabled By Lpfsmentioning

confidence: 99%

Archon: A Function Programmable Optical Interconnect Architecture for Transparent Intra and Inter Data Center SDM/TDM/WDM Networking

Yan

Hugues-Salas

Rancaño

et al. 2015

J. Lightwave Technol.

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This paper reports all-optical, function programmable, transparent, intra-inter data center networking (DCN) using space and time division multiplexing (SDM/TDM) within data centers and wavelength division multiplexing (WDM) between data centers. A multi-element fiber (MEF) is used for SDM transmission to provide a large quantity of optical links between the top-of-racks (ToRs) and the function programmable cluster switch. Beam-steering large-port-count fiber switches (LPFS), used as central cluster switches and inter-cluster switch, provide a single hop optical circuit switching (OCS) solution, and also enable network function programmability for DCN to support variable traffic patterns and different network functions. A TDM switch as a plug-in function provides intra-cluster communication with variable capacity and low latency. The flat-structured intra data center architecture, with a circuit-switched SDM and TDM hybrid network enables scalable, large-capacity and low-latency DCN communication. In addition, all-optical ToR-to-ToR inter-DCN is realizedthrough metro/core networks. A highly-nonlinear fiber (HNLF) based all-optical SDM-to-WDM converter transfers three SDM signals to 3-carrier spectral superchannel signals, which are transmitted to the destination DCN, through the metro/core networks. The all-optical ToR-ToR cross-DCN connections enable the geographically distributed DCNs to appear as one big data center.

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Section: ) Network Function Programmability Enabled By Lpfsmentioning

confidence: 99%

Archon: A Function Programmable Optical Interconnect Architecture for Transparent Intra and Inter Data Center SDM/TDM/WDM Networking

Yan

Hugues-Salas

Rancaño

et al. 2015

J. Lightwave Technol.

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“…Bandwidth variable transmitters (BVTs) on ToRs provide inter-cluster links of up to 320 Gbit/s. In addition, by introducing the architecture-on-demand (AoD) concept 6 in DCN, network function programmability (NFP) is enabled to support variable traffic patterns as well as broadcasting and aggregation.…”

Section: Introductionmentioning

confidence: 99%

First demonstration of all-optical programmable SDM/TDM intra data centre and WDM inter-DCN communication

Yan

Hugues-Salas

Rancaño

et al. 2014

2014 the European Conference on Optical Communication (ECOC)

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We successfully demonstrate a flat-structured DCN powered by large-port-count fibre-switchbased OCS, PLZT-switch enabled TDM and MEFs supported SDM. The inter-DCN ToR-to-ToR direct optical connections are setup through metro/core networks using all-optical SDM/WDM converters. IntroductionOptical interconnection is the most promising technology to provide power-efficient, highbandwidth connections in large scale data centre networks (DCN). Large-port-count fibre switches (LPFS) enable flat-structured lowlatency DCNs 1,2 . In such DCNs, a large quantity of links need to be setup between the Top-of-Racks (ToRs) and the centralized optical switches to realize an optical circuit switching(OCS)network. One approach is to explore DWDM technologies. However, ubiquitous connections between ToRs require frequent wavelength reconfiguration and switching. Thus, a DWDM-based OCS would first have to demultiplex and switch individual wavelength channels. Thanks to recent advances in fibre technologies, space division multiplexing (SDM) is now possible, employing multicore fibres (MCF) or multielement fibres (MEF) which provide as many as 19 parallel links in dimensions similar to those of a typical SMF 3,4 . Furthermore, VCSEL/PD arrays can potentially be matched to MCF/MEF, to provide increased capacity with small footprints and low power-consumption 5 . The characteristics of SDM make it suitable for DCN applications.In this paper, we demonstrate for the first time an all-optical OCS-based DCN, combining the benefits of both SDM and TDM technologies for intra-DCN communications using MEFs. A beamsteering 192 × 192 LPFS interconnects a) ToRs via MEF links, b) optical functional elements, i.e., PLZT TDM switch, SDM/WDM converter and c) inter-DCN links. The LPFS can realize different connection matrices, e.g., a single hop OCS, to serve the long-lived data flows for intra-DCN communications. The TDM switches, incorporating OCS/TDM reconfigurable transceivers on ToRs, serve low-capacity, highly-connected data

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Node Architectures for Elastic and Flexible Optical Networks

et al. 2016

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Network Function Programmability and Software-Defined Synthetic Optical Networks for Data Centres and Future Internet

Cited by 4 publications

References 3 publications

Archon: A Function Programmable Optical Interconnect Architecture for Transparent Intra and Inter Data Center SDM/TDM/WDM Networking

Archon: A Function Programmable Optical Interconnect Architecture for Transparent Intra and Inter Data Center SDM/TDM/WDM Networking

First demonstration of all-optical programmable SDM/TDM intra data centre and WDM inter-DCN communication

Node Architectures for Elastic and Flexible Optical Networks

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